class_docstr: Patch a callback output value
  
  Act like a proxy of the output prop value on the frontend.
  
  Supported prop types: Dictionaries and lists.
code: def __getstate__(self):
      return vars(self)
  
label_desc: Use image node_id 2 for calling the Patch obj's underlying member method code with example usage: obj.__getstate__() and returns: vars